posirot
®
Magnetic Angle Sensors PRDS-CANOPR, PRDS-J1939R
6
Version 1.0.0
www.asm-sensor.com
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3 Installation and initial operation
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Description of the PRDS sensors
The angle sensors PRDS of the posirot
®
product family perform non-contact or shaft-based angle
measurement. A position magnet rotates in front of the sensing area of the sensor head.
The sensor detects the angular position of the position magnet and outputs an absolute digital position value
(CANopen, SAE J1939).
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3.1 Mechanical installation
•
Mount the sensor without mechanical strain.
•
For sensors with shaft use flexible coupling or torque arms to avoid misalignment errors (see page 12
“Couplings”).
Mechanical information for the PRDS27 sensor:
•
Mount the sensor on a flat surface.
•
Do not deform the sensor housing!
Placement and alignment of the position magnet
For non-contact sensor models air gap and alignment of sensor and position magnet has to be observed. The
linearity will degrade in case of misalignment.
Adjacent magnetic fields or ferromagnetic materials can influence the measurement results of the PRDS
sensors of the posi
rot
®
product family. Therefore, the angle sensors and position magnets should be mounted
solely with nonmagnetic / non magnetisable screws and washers.
The angle sensors PRDS1, PRDS2, PRDS3, PRDS5, PRDS6 and PRDS7 are equipped with an integrated
magnetic shield which minimizes the sensitivity against external magnetic fields.
An optional shield plate is available for the angle sensors PRDS27 and PRDS29. It can reduce the effect of
residual magnetizing in case the sensor has to be mounted on a ferromagnetic material.
It is however not possible to exclude the effect of lateral external magnetic fields.
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